Running of the contact interactions in chiral N3LO potentials from subtractive renormalization

Batista E.F.; Szpigel S.; Timoteo V.S.

Running of the contact interactions in chiral N3LO potentials from subtractive renormalization

Tipo

Artigo de evento

Data de publicação

2015

Periódico

Journal of Physics: Conference Series

Citações (Scopus)

2

Autores

Batista E.F.
Szpigel S.
Timoteo V.S.

Resumo

© Published under licence by IOP Publishing Ltd.In this work a subtracted kernel renormalization procedure (SKM) is applied to the chiral NN potential up to next-to-next-to-next-to-leading-order (N3 LO) to obtain the running of the renormalized contact strengths with the subtraction scale μ and the phase shifts for all uncoupled waves with contact interaction (S,P,D). We use two potentials constructed within the framework of Weinberg's approach to ChEFT, which provide a very accurate description of NN scattering data below laboratory energies E ∼ 350 MeV, namely Epelbaum, Glöckle and Meissner (N3LO-EGM) and Entem and Machleidt (N3LO-EM). For both potentials, we consider a large cutoff (30 fm-1) and analyze the phases and the running of the contact strengths with the subtraction point μ by making a fit of the K-matrix with five subtractions to the K-matrix from the Nijmegen II potential at low energies (E ≤ 20 MeV).

Assuntos Scopus

Contact interaction , Contact strength , K-matrix , Next to next to leading orders , Nn-scattering , Renormalization